PolicyLayer Registry
The MCP server that vets MCP servers.
Community: Submitted by a user or imported; check the owner before granting accessOnlineNo sign-inGlobalFreeCan modify data
What it can do
- Check Mcp Server: Check an MCP server against the PolicyLayer registry BEFORE installing or allowing it. Accepts a registry slug, an npm package name (scoped or not), or a server name. Returns the ful
- Search Registry: Search the PolicyLayer registry of published MCP servers by name, slug or package substring. Returns candidate matches with risk grade, verification tier and tool count — follow up wi
- Check Tool: One tool's full risk classification on a published MCP server: category, severity, risk analysis and evidence, OWASP classes, parameter schema and the recommended policy default. Use when
What data it sees
Do you need an account
No: the server works without sign-in
The MCP server that vets MCP servers. Connect your agent to the PolicyLayer registry and check any MCP server's identity, risk grade, auth posture and tool classifications before installing it. Free single-server lookups over 32,500+ published servers and 515,000+ classified tools, kept current by continuous scanning.
Server tool list (4)
Raw names from tools/list. Only developers need these.
| check_mcp_server | Check an MCP server against the PolicyLayer registry BEFORE installing or allowing it. Accepts a registry slug, an npm package name (scoped or not), or a server name. Returns the full published record: identity verification with its evidence, risk grade, auth posture, freshness, and the tool surface listed riskiest-first. A server the registry does not know is queued for scanning by this very call — check back shortly. |
| search_registry | Search the PolicyLayer registry of published MCP servers by name, slug or package substring. Returns candidate matches with risk grade, verification tier and tool count — follow up with check_mcp_server on the match you meant. |
| check_tool | One tool's full risk classification on a published MCP server: category, severity, risk analysis and evidence, OWASP classes, parameter schema and the recommended policy default. Use when deciding whether to allow a specific tool call, e.g. "should execute_sql on this server be permitted?" |
| get_change_events | The registry change feed: tool-surface drift, auth-posture flips, impostor flags, version bumps — every event the freshness watchers emit, id-cursored so a consumer resumes exactly where it stopped. Requires a Registry Licence key (Authorization: Bearer plr_...); self-serve at https://policylayer.com/registry/pricing. |